发明名称 |
METHOD AND APPARATUS FOR CANCELING ACOUSTIC ECHO, AND METHOD FOR UPDATING ADAPTIVE FILTER COEFFICIENT BY THE APPARATUS |
摘要 |
An apparatus for canceling an acoustic echo signal caused by a far-end talker signal is provided. The apparatus for canceling an acoustic echo signal includes: a variance estimating unit configured to estimate a variance of a first audio signal of a near-end talker signal and a first noise signal of the near-end talker signal; a step size determining unit configured to determine a step size by using the variance of the first audio signal and the variance of the first noise signal; an adaptive filter coefficient updating unit configured to update an adaptive filter coefficient of an adaptive filter by using the step size; and an acoustic echo canceling unit configured to estimate an acoustic echo signal by using the adaptive filter coefficient, and cancel the acoustic echo signal from a microphone input signal by using the estimated acoustic echo signal. |
申请公布号 |
US2014112488(A1) |
申请公布日期 |
2014.04.24 |
申请号 |
US201314061671 |
申请日期 |
2013.10.23 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM HYUN WOO;KIM DO YOUNG;CHUN WOOJIK |
分类号 |
H04R3/02 |
主分类号 |
H04R3/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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